| B2TYF6 | HIS4_SHIB3 | Shigella boydii serotype 18 (strain CDC 3083-94 / BS512) | hisA SbBS512_E1208 | Detail |
| Q7U851 | HIS4_SYNPX | Synechococcus sp. (strain WH8102) | hisA SYNW0773 | Detail |
| B5EQF1 | HIS4_ACIF5 | Acidithiobacillus ferrooxidans (strain ATCC 53993) (Leptospirillum ferrooxidans (ATCC 53993)) | hisA Lferr_2654 | Detail |
| B7NC64 | HIS4_ECOLU | Escherichia coli O17:K52:H18 (strain UMN026 / ExPEC) | hisA ECUMN_2366 | Detail |
| Q7TV18 | HIS4_PROMM | Prochlorococcus marinus (strain MIT 9313) | hisA PMT_0520 | Detail |
| Q21CK4 | HIS4_RHOPB | Rhodopseudomonas palustris (strain BisB18) | hisA RPC_0307 | Detail |
| B6IWI6 | HIS4_RHOCS | Rhodospirillum centenum (strain ATCC 51521 / SW) | hisA RC1_3298 | Detail |
| A4WUS7 | HIS4_RHOS5 | Rhodobacter sphaeroides (strain ATCC 17025 / ATH 2.4.3) | hisA Rsph17025_2251 | Detail |
| A8Z5H4 | HIS4_STAAT | Staphylococcus aureus (strain USA300 / TCH1516) | hisA USA300HOU_2675 | Detail |
| Q5HKP1 | HIS4_STAEQ | Staphylococcus epidermidis (strain ATCC 35984 / RP62A) | hisA SERP2302 | Detail |